- 1(current)
Q. No.Match the items given in Column I with examples given in Column II.
|
Column I (type of Bonds) |
Column II |
||
| A. |
Hydrogen bond |
1. |
Carbon |
| B. |
Resonance |
2. |
LiF |
| C. |
Ionic solid |
3. |
H2 |
| D. |
Covalent solid |
4. |
HF |
| 5. |
O3 |
Codes:
| Options: | A | B | C | D |
| 1. | 2 | 3 | 4 | 1 |
| 2. | 1 | 2 | 3 | 5 |
| 3. | 5 | 4 | 3 | 2 |
| 4. | 4 | 5 | 2 | 1 |
Subtopic: Resonance & Nature of Compounds |
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Level 1: 80%+
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In the anion HCOO- the two carbon-oxygen bonds are found to be of equal length. What is the reason for it?
| 1. | Electronic orbits of the carbon atom are hybridized |
| 2. | The C = O bond is weaker than the C - O bond |
| 3. | The anion HCOO- has two resonating structures |
| 4. | The anion is obtained by removal of a proton from the acid molecule |
Subtopic: Resonance & Nature of Compounds |
86%
Level 1: 80%+
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Subtopic: Resonance & Nature of Compounds |
83%
Level 1: 80%+
AIPMT - 2005
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Assertion(A): Dinitrogen is chemically unreactive at ordinary temperature and is very stable.
Reason(R): The bond dissociation energy is 946 kJ mol-1.
1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true and R is false.
4. A and R both are false.
Reason(R): The bond dissociation energy is 946 kJ mol-1.
1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true and R is false.
4. A and R both are false.
Subtopic: Resonance & Nature of Compounds |
86%
Level 1: 80%+
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Which of the following is not true about resonance?
| 1. | The resonating structures are hypothetical. |
| 2. | The unpaired electrons in various resonating structures are the same. |
| 3. | The energy of the resonance hybrid is less than the energy of any single canonical structure. |
| 4. | In resonance, both 𝝅 electrons and σ electrons can move. |
Subtopic: Resonance & Nature of Compounds |
82%
Level 1: 80%+
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- 1(current)
Q. No.
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